【摘要】 通过对煤样的煤质分析、矿物组成分析、黄铁矿的宏观微观赋存特征观察以及硫的同位素分析测试,来研究陕北横山地区煤中黄铁矿的赋存特征及成因。结果表明:该地区煤中硫源复杂且多样,黄铁矿普遍存在于各煤层中,并且形成于不同的世代阶段。同时由于地壳热液运动对元素的迁移作用,使得该地区煤中无机硫含量明显增高,而煤层中含量最多的薄膜状黄铁矿为后生的热液成因。更多还原

【Abstract】 The formation mechanism and occurrence characteristics of pyrite in coal from Hengshan are studied through the analysis of coal quality, mineral composition analysis, macroscopic and microscopic occurrence characteristics of pyrite and sulfur isotopic analysis. The results show that sulfur source are complex and diverse, pyrite is widespread in various coal seams and formed in different stages of generation. Due to the migration of elements by hydrothemal movement, the content of the inorganic sulfur is obviously increased, and the most abundant film-like pyrite in the coal seam is the cause of the hydrothemal movement.更多还原